71 lines
1.6 KiB
Go
71 lines
1.6 KiB
Go
package services
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import (
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"context"
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"history-api/internal/repositories"
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"github.com/gofiber/fiber/v3"
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)
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const tileCacheControl = "public, max-age=31536000, immutable"
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type TileResponse struct {
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Data []byte
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ContentType string
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ContentEncoding string
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CacheControl string
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}
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type TileService interface {
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GetMetadata(ctx context.Context) (map[string]string, *fiber.Error)
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GetTile(ctx context.Context, z, x, y int) (TileResponse, *fiber.Error)
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}
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type tileService struct {
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tileRepo repositories.TileRepository
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}
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func NewTileService(
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TileRepo repositories.TileRepository,
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) TileService {
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return &tileService{
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tileRepo: TileRepo,
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}
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}
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func (t *tileService) GetMetadata(ctx context.Context) (map[string]string, *fiber.Error) {
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metaData, err := t.tileRepo.GetMetadata(ctx)
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if err != nil {
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return nil, fiber.NewError(fiber.StatusInternalServerError, "Failed to fetch map metadata")
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}
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return metaData, nil
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}
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func (t *tileService) GetTile(ctx context.Context, z, x, y int) (TileResponse, *fiber.Error) {
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data, format, isPBF, err := t.tileRepo.GetTile(ctx, z, x, y)
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if err != nil {
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return TileResponse{}, fiber.NewError(fiber.StatusInternalServerError, "Failed to fetch tile data")
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}
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res := TileResponse{
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Data: data,
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CacheControl: tileCacheControl,
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}
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switch format {
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case "pbf":
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res.ContentType = "application/x-protobuf"
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case "png":
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res.ContentType = "image/png"
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case "jpg", "jpeg":
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res.ContentType = "image/jpeg"
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default:
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res.ContentType = "application/octet-stream"
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}
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if isPBF {
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res.ContentEncoding = "gzip"
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}
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return res, nil
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}
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